英文關鍵字
back
book
boy
casual
caucasian
chair
college
concentration
desk
education
face
gesture
hand
handsome
head
headphones
holding
home
institute
laptop
lean
lecture
lesson
lifestyle
looking
male
man
notebook
notepad
one
pen
pencil
pensive
pile
school
serious
sitting
student
study
studying
table
teenager
textbook
think
thinking
thoughtful
university
young
youth